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THOMAS TAYLOR, OF WASHINGTON, DISTRICT OECOLUMBIA. Letters Patent No.61,117, dated January 8, 1867.

IMPROVEMENTIN ALLOYS FossABoTs or PROJEGTILES.

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, TO ALL WHOM IT'MAY CONCERN:

Be it known that I, THOMAS TAYLOR, of the city and county of Washington,in the District of Columbia, have invented a new and improved MetallicComposition for Sabots for Projectiles and I do hereby declare that thefollowing is a full and exact description thereof.

The nature of my invention consists in a certain metallic compositionfor sabots for projectiles, so that in connection with certainformations of the same, they will perform the best functions or results,expand, take the grooves, if such there should be, in a cannon, &c., andnot rupture and fly as after leaving the piece.

The alley or proportions must vary according to the calibre of theprojectile. This can be well understood by all skilled in the art. Acomposition of one part of tin to four of lead forms a very good alloyfor sabots for weak charges, and is a good solder; but as the chargesare increased, the tin must be within certain limits. An extendedexperimental experience has enabled meto arrive at these -results,particularly when I was conducting experimcnts on this subject. Hence Isaw def ects, and now propose to remedy them. Thus in increasing theproportion of tin, I would vary it from the above to one hundred andtwenty pounds of lead to seventyeight of tin for heavy projectiles. Toogreat increase of tin produces brittleness and weakness. The tensilestrength must'be proportioned to the calibre or charge. When theproportion of tin is less than one fourth-of the lead, the tensilestrength of the metallic composition is much diminished, as well as itsqualities as a solder. The bases of projectiles have been turned, leadand antimony have been used as a sabot composition, but it absorbs thetin, and renders the adhesion insecure. Pure lead hugs the walls of thegun, fouls it, and is deficient in tensile strength. Antimony renders ittoo brittle. What is desired is a composition which is soft andluhricatory, and which is of great tensile strength, withoutbrittleness, and at same time being a solder, which will not absorb thepreparatory tinning from the base of the projectile, whilst the sabotmetal is in a molten condition, being cast or moulde'd'on' to theprojectile. When a PIOJGClZllG approaches the Weight ofthree hundredpounds, more or less, particularly more, besides the one hundred andtwenty of lead, seventy-eight of tin, I prefer adding some three poundsof copper.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent of 'the United States, is-- '-An alloy for acomposition for metallic sabots for projectiles, within the limits orproportions described,

and for the purpose set forth.

' THOMAS TAYLOR.

Witnesses:

S. S. FAHNESTOCK, W. U. WALTON.

